package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @Date 2021/9/30 10:02
 * @Author 望轩
 */
@Service
public class PaymentService {
    /**
     * 正常访问,肯定OK
     * */
    public String paymentInfo_OK(Integer id){
        return "线程池："+Thread.currentThread().getName()+"paymentInfo_OK,id:"+id+"\t"+"O(n_n)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value="5000")
    })
    public String paymentInfo_TimeOut(Integer id) throws InterruptedException {
        int timeNumber=3;
        TimeUnit.SECONDS.sleep(timeNumber);
        //int age=10/0;
        return "线程池："+Thread.currentThread().getName()+"paymentInfo_TimeOut,id:"+id+"\t"+"O(n_n)O哈哈~"+" 耗时秒钟";
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()+"系统繁忙或者运行报错，请稍后再试,id:"+id+"\t"+"O(π_π)O";
    }


    //=========服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name="circuitBreaker.enabled",value="true"),//是否开启断路器
            @HystrixProperty(name="circuitBreaker.requestVolumeThreshold",value="10"),//请求次数
            @HystrixProperty(name="circuitBreaker.sleepWindowInMilliseconds",value="10000"),//时间窗口期
            @HystrixProperty(name="circuitBreaker.errorThresholdPercentage",value="60"),//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id<0){
            throw new RuntimeException("********id 不能为负数");
        }
        String serialNumber= IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功,流水号:"+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能为负数，请稍后再试，/(ToT)/~~  id:"+id;
    }
}


















